/usr/lib/python3/dist-packages/glances/exports/glances_elasticsearch.py is in glances 2.7.1.1-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 | # -*- coding: utf-8 -*-
#
# This file is part of Glances.
#
# Copyright (C) 2015 Nicolargo <nicolas@nicolargo.com>
#
# Glances is free software; you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# Glances is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
"""ElasticSearch interface class."""
import sys
from datetime import datetime
from glances.compat import NoOptionError, NoSectionError
from glances.logger import logger
from glances.exports.glances_export import GlancesExport
from elasticsearch import Elasticsearch, helpers
class Export(GlancesExport):
"""This class manages the ElasticSearch (ES) export module."""
def __init__(self, config=None, args=None):
"""Init the ES export IF."""
super(Export, self).__init__(config=config, args=args)
# Load the ES configuration file
self.host = None
self.port = None
self.index = None
self.export_enable = self.load_conf()
if not self.export_enable:
sys.exit(2)
# Init the ES client
self.client = self.init()
def load_conf(self, section="elasticsearch"):
"""Load the ES configuration in the Glances configuration file."""
if self.config is None:
return False
try:
self.host = self.config.get_value(section, 'host')
self.port = self.config.get_value(section, 'port')
self.index = self.config.get_value(section, 'index')
except NoSectionError:
logger.critical("No ElasticSearch configuration found")
return False
except NoOptionError as e:
logger.critical("Error in the ElasticSearch configuration (%s)" % e)
return False
else:
logger.debug("Load ElasticSearch from the Glances configuration file")
return True
def init(self):
"""Init the connection to the ES server."""
if not self.export_enable:
return None
try:
es = Elasticsearch(hosts=['{}:{}'.format(self.host, self.port)])
except Exception as e:
logger.critical("Cannot connect to ElasticSearch server %s:%s (%s)" % (self.host, self.port, e))
sys.exit(2)
else:
logger.info("Connected to the ElasticSearch server %s:%s" % (self.host, self.port))
try:
index_count = es.count(index=self.index)['count']
except Exception as e:
# Index did not exist, it will be created at the first write
# Create it...
es.indices.create(self.index)
else:
logger.info("There is already %s entries in the ElasticSearch %s index" % (index_count, self.index))
return es
def export(self, name, columns, points):
"""Write the points to the ES server."""
logger.debug("Export {} stats to ElasticSearch".format(name))
# Create DB input
# https://elasticsearch-py.readthedocs.io/en/master/helpers.html
actions = []
for c, p in zip(columns, points):
action = {
"_index": self.index,
"_type": name,
"_id": c,
"_source": {
"value": str(p),
"timestamp": datetime.now()
}
}
actions.append(action)
# Write input to the ES index
try:
helpers.bulk(self.client, actions)
except Exception as e:
logger.error("Cannot export {} stats to ElasticSearch ({})".format(name, e))
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